Train control



H. B. TAYLOR TRAIN CONTROL Dec. 16, 1930.

Filed July 23, 1929 2 Sheets-Sheet l a 5 Hz? ATTORNEY Dec. 16, 1930. B. TAYLOR 1,785,706

' TRAIN CONTROL Fil'ed July 23, 1929, 2 Sheets-Sheet 2 QiORNEY Patented Dec. 16, 1930 UNITED s'rATEs PATENT OFFICE HERBERT B. rrAvLoE, RooHEsrER, NEW YORKQHASSIGNOR T0 GENERAL RAILWAY I, SIGNAL COMPANY, OF ROCHESTER, NEW YORK TRAIN CONTROL Application filed m 2s,

v :Thisi'nvention relates in general to auto matlc tIZLIII CODtI'Ol systems for railways, and i has more partlcular reference '.-to an axledrivenreversing switchfor use in such sys- 1 r'tems .to-the automatic control when going in the directlon of traffic,,whether the engine or 1 tender be in the lead and to haveit free from the automatic control, when going against I the direction of traflic, whether the engine f or tender be inthe lead;

While applicable to various types of auto- 'matic train control,there will, here be consid ered merely byway of example, what is necessary to automatically producethe' above de- 3 sired conditions in connection with an auto' matic intermittent inductive train control system-in which-'areceiveriis mounted on each side of a vehicle, and inductors are mounted along the trackway on the rightside V backward operation,thedirection of rotation of the vehicle axles will be reversed, and at the same timejthe sides of the vehicle, rela-- tive to the trackway also will be reversed.

Hence, an instrumentality which will respond to;a change in direction ofrotation of the asfiehicle 'aXles,,soKas to cut one receiver out of the control'circ'uit and the one on the opposlte side in, will function to maintain the train with automatic control under the two conditions be ng considered. When moving op,- 4nl pOS1t6-t0' the normal direction of traffic,

whether going backward 'or forward, this same instrumentality will inneach "case re- ;liev-e'the train from automatic-control.

lVith-the above and other considerations 1153,,j11 l1'll11diih is proposedaccordingto this inof Fig. 2 viewed in the direction of the arrows;

1929. Serial No. 380,379.

vention, to provide an aX1edriven reversing switch which will function to reverse a set of contacts upon reversal of the direction of rotation ofthe car axle.

Further objects, purposes, and characteristic-featuresofthe invention will appear as the description progresses, reference being had to the accompanying drawings, showing, solely by the way of illustration one specific embodiment of the inventive concept. In the drawing 7 i Fig. 1 isasectional view on line l1 of Fig. 2 viewed in the direction of the arrows;

Fig. 2 is a side elevation of a device embodyingthepresent invention with parts cut away to more clearly show the structure;

Fig. 3- is a sectional view on line 3 3 of Fig. 2 viewed in the direction of the arrows;

Fig, 3A is asectional view on line 3A-3A Fig.- 4: tea sectional view on line 4+4 in Fig. 2 viewed in the direction of the arrows.

Referring now to the drawings, a dotted portion 1 (seelFigs. 1 and 4) represents the end portion of apony truck axle'of a'locomo-c tive, with tap bolts 2 securely fastening the main rotating drive member, 3 to the pony truck axle,having located the central position by placing the circular flange 3 within a groove which has been. cut into, the axle by a means of a lathe.

The reversing switch mechanism, as includedwithin the present invention,is held in an upright position, resisting the tendency to rotate, by, the torque rod or conduit 4 being suitably clamped to the frame F ofthe locomotive, and also servingithepurpose of a conduit for the a necessary lead wires, which are associated with such a reversing switch.

The rotating drive member 3, is journalled in a twopart casing composed ofcasing members 5 and 6 which are suitably secured. by bolts 7 and'nuts 8 having the usual lockrwashers. This rotating drive member, 3 is suitably lubricated by oil passing through oil feeders 9,-with the oil reservoir within the cavity of the rotatingdrive member 3, which is further inclosed within its casing members and 6 by the cover 10 being'held downupon V the gasket 11 by the tap bolts 12 secured with the usual lock washers. This cover 10has a thread plug 13' so located that'the cavity vwithin the drive member 3 can be-filled with suitable lubricating oil.

There is awormvgear 3P7 tormedon the periphery of the rotating drive -member 3,

cavity within the I by the gasket 22.

which drives the spiral gear 14 at a much reduced speed on its axle 15 which is our.-'

nailed-at each end in thebearing bushings 16 and '17 and has riveted upon it at one end the trio member 18; The bearing bushing 17 is suitably heldwithin the case 6 with'the thrust washer 17 intervening between said, bearing bushing 17 and gear 14. The bearing bushing. 16 is held-against the end of the axle 15 with the thrust 'washer16 intervening be-' tween the beari n g bushing 16 and the gear 14',

. by the adjusting nut 19'which is locked into 25:

place by the lock nut20. The bearing bush- The trip member 18 has two arms with rollers 23 and 24'on axles 25 and 26 at the ends oftheir respective arms, (see Figs. 3'and3A) which engage at certain times'the dogs 27 and j 29. These dogs 27 and 29 are biased by the spring 28 and aremounted on the movable rocker arm 30, which has its bearing pin 30? journalledin case 6 with pin 31 pressed firmly by spring 32 into a groove in said bearing pin 30" to hold the-arm30 in place. Also, the pins 30 and 30 are integral with the 'arm 30 and furnish limits for. the biased dogs 27] and 2-9. V

- The arm 30 also has a toothed sector 30*- integral withit, which engages a't'oothed dog 1 33 that cooperates with'a; toggle link and member 36 which is suitably secured'to the spring combination 34, 34 and 35 which causes saidi'dog 33 to assume either of two extreme positions. The link and spring-eom bination' 34, 34 and 35 is supported by a casing 6 by tap bolts 37, while the toothed dog 33 is suitably secured to shaft 38, which shaft i 38 is supported by members 39 and-40 suitably secured to' casingfi. Insulated from said shaft 38 but rockable with it are the contact sectors, 41 that, for example, when in theextreme right hand'position (see 2) make connections between contact figures 42 43', also between fingers 44? and 45,and againwhen the contactsectors 41 are in an .extieme left position, contact will be made between fingers 46 and 47 ,also between 48 and "49. J Thus", it can be easily seen that the con bolts 53- tact sectors 41 are biased to their extreme positions by the toggle provided by links 1 34 and 34 and spring 35. I a.

In this particular form shown in the draw ing, there have been shown four different sets ofcontact fingers whi'ch'maybe used as de- 1 sired under-varyingcircumstances, dependingonthe circuits to be controlled in a particular case;; however this number can of course be varied according to the conditions. The contact fingers 42, 43, 44, 45,46, 47, 48,

and '49, are securely attachedfto insulating;

blocks 50 (see Fig. 1) by binding posts 51 having suitable terminal nuts, with said blocks 50 secured on the top of bosses '6 by the tap bolts 53,considering of course that there can be no possible connection between the bin'dingposts 51 and said bosses 6 or tap This contact mechanism along with the tr pping mechanism' are housed within the casing 6-withacover 54 tightly secured by gasket 55, being firmlypress'ed into place by fore/are notshownw means of hinges and a spring 'hasp which are considered of. minor importance and there Y it will be noted here, that the torquerod l prov des means whereby thereversing switch, as included within the presentinvention, 1s

- prevented .from rotating in the direction of Y the pony trnckaxle denoted by the dotted portion 1. However, as the locomotive wheels pass over: uneven'trackway, thejlocomotive v frameFwill sway in respectto the pony truck 7' i I c axles, which motion is provided'lfor bythe torque rod-4 being pivoted in-respect to the to set within a supplementary bearing sur-' {face Vwithinthe casin 6 and secured in this i i 2; .3 i

casing 6"'(see 2 and 4) by a suitable bearing surface provided on the' torque rod'4 7 position by the pin 56 fitting'within a groove provided inthetorque rod 4; The pin'56 is Y i yheld intov Position bycotter keys or otherwise. 5 I,

Operation-fit is assumed, that the drawings show the reversing switch in the normal 1 conditions for forward running with the re-' versing switchmounted'up onthe right hand side of the locomotive and with the-trackway inductors on the right hand side ofthe track facing in the directionoftrafiic;hence, the

reversingfswitch will have connectionsmade between finger-s42 and 43 also between eon tact fingers 44 and 45 thus having the train 1120. I 7

control receiver on theright handiside of the loco-motive connected in the circuit Thus,

thelocomotive miay run forward with normal 1 -traffic withtra n control or agamstnormal llrttfllC WltlIOUfi'tIaJn control providing of course the engineis leading the tender and other CZLI'S'IH either case.

with the-above outlined conditions Obtaining, motion of the'car in'a forward direction is transmitted to the tripping arm 18Jthrough the drive member 3, gear 14-andaxle 15." Thisentirely clea-re dI ,Thus, the locomotive is pro counterclockwise direction (see Figs/3 and I indicated by the arrow designated N, thnscaiising no change in' contact connections, asthe dog 27 is passively or inoperably piished' aside bythe rollers 23 and 24 increas ing the bias' on spring 28 while the 'dog29 is vide'd withf train control for forward running in the directionof'traffic or s relieved of train control whentravelling' against the direction of traffic, due tothe fact,'that the trackway inductor is on the. opposite side of the track from the car carried receiver.

Now. letvus assume, that the'locomotive 1S :travelling backwards either ina direction against normal traffic or in a direction with normal traffic. In either case, the tripping member 18 will rotate in a clockwise direc- 6 tion (see Figs. 3 and 3 A),as indicated by the arrow. designated R. In this case the roller 24 will revolve toward dogs 29 and 27, clearing dog 29 andv actively or operably pushing dog 26 until it has made arm 30, toothed sector 30 toothed dog 33 and link 34 assumetheir will not be entirely cleared, butwill let the rollers 23 and 24 pass by causing merely an increase in bias on spring 28 in the same manner as dog 27 before the motion had been reversed. The motion of toothed dog 33 changing to its opposite extreme position, is trans mitted to the contact sectors 41 so that they assume an extreme left hand position (see 1 and 2) at which time contact is made between contact fingers 46 and 47, also between contact fingers 48 and 49. This posi- 5 tion of the contact sectors 41 has connected apparatus, in addition to disconnecting the the left hand receiver of the train control right hand receiver. Thus, the apparatus is way ofillustration, and is not intended in any so 1 such forms and modifications are intendedto now connected so that the locomotive may run backward against the direction of normal traffic without train control, or with the direction of nornial'traflic with train control.

thus preventing an unnecessary brake application which would occur if the receiver circuit were broken. 7 i

. The above rather specific description of one form of this invention, is given solely by the manner whatsoever, in a'limiting sense, as obviously the invent-ioncan be embodied in many different physical forms, and issueceptible of numerous modifications, and all be included in this'invention as come within the scope of the appended claims. 7

Having described my invention, I 'now I .l i

1. In a reversing switch mechanism for train control systems, a shaft, means operatively connecting said shaft to the end of a vehicle axle, an electric switch capable of as suming either of two extreme positions, means'operating said electric switch to an op posite extreme position upon reversal of rotation of said shaft, and means holding said switch in its extreme positions independently of said operating means. I I

"2. In a reversing switch mechanism for train control systems, a casing, a shaft in said casing, means o )eratively connecting said shaft to theend of a vehicle axle including, a main drive member connected to the end of said vehicle axle and having a worm gear integral therewith, a spiral gear mounted on said shaft and engaging said'worm gear, means supporting said casing including bearingsupports on said main drive member, and a torque rod preventing rotation of said casing on said bearing supports, an electric switch capable of assuming either of two extreme positions, and means operating said switch to an oppositeextreme position upon reversal of rotation of said shaft.

3. In a reversing switch mechanism for traincontrol systems,-a shaft, means operatively connecting said shaft to a vehicle axle, an electric switch capable of assuming either of two extreme positions, means operatively I connectingsaid shaft and said switch to move the switch to a corresponding extreme posi- 'tion. upon the reversal in the direction of rotrain control systems, ashaft, means operatively connecting said shaft to. a vehicle axle,

an electric switch capable of assuming either of two extremepositions, and means operatively. causing said electric switch'to assume an opposite extreme position upon reversal of rotation of said shaft including, a positivelyengaging ratchet upon initial reversal ofsaidshaftand a passively engaging ratchet upon continued rotation in one direction.

5. In a reversing switch mechanism for.

train controlfsystems, a shaft, means operatively connecting said shaft to a vehicle axle, an electric switch capable of assuming either of two extreme positions, and means operatively causing said electric switch to assume an oppositeextreme position upon reversal ofrotation of said shaft including, a rocker arm associated with said electric swicth, two dogs mounted on said rocker arm and biased to extreme positions, trip arms'mounted on said shaft which positively engage one of said dogs upon-reversal of rotation of said shaft tofcausesaid rocker arm to assume an oppositefextreme position.

6; In a reversing switch mechanism for of said pivoted do gs'upon initial reversal of train control systems, a shaft, means operatively connectings'aid shaft to the end of a vehicle axle, anelectric switch capable' of assuming either oftwo. extreme positions and means -operatively" causing 1 said electric switch to assume an oppositejextreme position upon-reversalof rotat on of said shaft 1 including, a rocker arm associated with said electric switch and capable of assumlng either of two extreme positions, two dogs mounted on said rocker arm and biased to extreme positions, triparms mounted on said shaft one of. which positively engagesrone of said dogs only upon initial reversal of rotatlonof said shaft tocausesaid rocker arm to assume an opposite extreme positionuand thereafter allowing all of said trip arms torotation is againreversed "7. In a"reversing switch mechanism for train control systems, a casing, a shaftinsaid casing, means operativ'ely connecting said shaft'to the end of a vehicle axle including,

passively engage'the other of said dogs until means supporting said casing including bearingsupports on said main drive member, and a torque rod. preventing rotation of said cas-f mg" on said bearing supports, an electric switch 'capable of assuming either of two ex- 5", the other of said dogs until direction of ro-fl tationiof said shaft is againreversed. n i 8, a'reversmg switch mechanlsmv for train control systems, a shaft, means opera-V tively connecting saidshaft to avehicle axle, an electric switch capable of assuming either of two extreme positions, and means opera tivelycausing said electric switch toassume an opposite extreme position upon reversal of rotation of said shaft including a toothed dog operablyj. connected to said electric switch, a toggle combination biasing said tootheddogito either of two extreme positions, a rocker arm centrally pivoted, a

V toothed sector integral with said rocker arm and engaging 'said toothed dog, two pivoted; clogs respectivelymounted on each extremity ofsa'id'rockerarm, saidpivoted dogs being biased to extreme positions, trip arms mounted on said shaft any one of which is adapted 'to operatively engage a corresponding one rotation of said shaft to actuate said rocker arm to an opposite extreme position, where-1 by the one-of .said pivoted dogs engaged by said trip arm is thereafter disengaged from; that trip arm and the remaining arms, andil whereby said other pivoted dog" "is actuated to an operating position in readinessfor the next reversal of rotationlof, said shaft.

"fin testimony whereof I affixmy signature; I

HERBERT TAYLOR.

a'main drive member connected tOfl'l end of said vehicle axle and having a worm gear integral'therewith, a spiral gear mounted on said shaft and engagingsaid worm gear, 

